
脱式计算.(能简算的要简算) 34×25+75%×75 45×56+25÷35 (59+56)×18
脱式计算.(能简算的要简算)34×25+75%×7545×56+25÷35(59+56)×18....
脱式计算.(能简算的要简算) 34×25+75%×75 45×56+25÷35 (59+56)×18.
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(1)
×25+75%×75
=75%×25+75%×75,
=(25+75)×75%,
=100×75%,
=75;
(2)
×
+
÷
=
+
,
=
;
(3)(
+
)×18
=
×18+
×18,
=10+15,
=25.
3 |
4 |
=75%×25+75%×75,
=(25+75)×75%,
=100×75%,
=75;
(2)
4 |
5 |
5 |
6 |
2 |
5 |
3 |
5 |
=
2 |
3 |
2 |
3 |
=
4 |
3 |
(3)(
5 |
9 |
5 |
6 |
=
5 |
9 |
5 |
6 |
=10+15,
=25.
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